Electric-arc lamp.



'Patented m. 26', I899. P. H. F. SPIES.

ELECTRIC ARC LAMP.

(Applicatioh filed Mar. 31-. 1899.)

2 Sheets8heet I.

(No Model.)

ATTORNEYS TNE mums PETERS to, FNOTO-LIYHU. WASHINGTON, DV 0.

Patented Dec. 26, I899.

v P. H. F. SPIES.

ELECTRIC ARC LAMP. (Application filed Mar. 81, 1899.) (No Model.) 2 Sheets-Sheet z.

NITED STATES ATN FFICE.

PETER H. F. SPIES, OF NEW YORK, Y., ASSIGNOR OF TWVO-THIRDSTO JOHN DURFEE, OF SAME PLACE, AND CHARLES G. DURFEE, OF YONK- ERS, NEW' YORK.

ELECTRIC-ARC LAM P.

- SPECIFICATION forming part of Letters Patent No. 639,786, dated December 26, 1899- Application filed March 31, 1899.

To all whom it may concern:

Be it known that 1, PETER H. F. SPIES, a subject of the Emperor of Germany, and a resident of the city of New York, borough of Manhattan, county and State of New York, have invented an Electric Lamp, of which the following is a specification.

My invention relates to arc-lam ps, more particularly to the class of gravity-feed lamps wherein no clutch is employed, although it is not limited thereto.

A lamp in which my invention is embodied is shown in the accompanying drawings, in which Figure 1 is a vertical detail sectional view, partly broken away, of a lamp illustrating my invention; and Fig. 2 is an enlarged sectional detail View of the valve of the lamp.

In the drawings the lamp is shown as comprising a base 11, provided with an annular lip b, in which are secured screws 0 or other fastening devices for supporting lugs or rings d, which engage with a lip upon the globe e and press the same tightly against a packingring f, so as to make an air-tight joint. Two tubes 9 h depend from the base a and are located immediately beneath the hollow polepieces of the magnet 2', herein shown as a series magnet. Working in the tubes gh, which are lined with mica or other insulating material, are a plurality of electrode-holders j k, which carry at their ends curved or angular electrodes Z. Each of the rods or plungers j 75 is provided wit-h a diagonal slot j 70, each of which receives a pin g h, secured to the tubes g h. The electrodes preferably consist of rods tipped with a composition of platinum and gold, preferably made by fusing together equal proportions of platinum and gold in a closed electric furnace. A closed space formed by two cup-shaped or hollow-ended carbons answers well as such furnace.

The circuit connections are as follows: Current enters by wire 1, passes through theelectromagnet i, thence by wire 2 to the bindingpost 3, thence by wire 4 to the rod or plunger j, thence through the electrodes Z Zto the other rod or plunger 77., thence by wire 5 to the binding-post 6, and by wire 7 out of the lamp. Normally the electrodes touch each other when the lamp is not in operation, and they are slightly lower than in the position shown in Fig. 1. Upon the passage of the current the magnet attracts the heads of the plun- Serial No. 711,193. (1% model.)

gers or rods j k, thereby raising the same and 5 5 causing the pin-and-slot connection g jh' 71;

to move the lower ends of the rods j It laterally to strike the arc.

It will be obvious that the position ofthe electrodes will be efficiently regulated by the passage of current through the magnet 2'.

The atmosphere in the globe is rarefied or exhausted through passage 0 by attaching an air-pump to the nipple m, first removing the I cap at. The ball-valve q is reseated in the seat 19 by the spring 7'.

Having described my invention, what claim, and desire to secure by Letters Patent, 1s

1. As a new and useful article of manufac- 7o ture, electric-light incandescence bodies embodying in their structure gold and platinum.

2. In an electric lamp, the combination of the exhausted inclosing globe, circuit connections, and electrodes composed of platinum and gold fused together substantially as described contained within the globe.

3. In an electric lamp, the combination of a magnet, vertically-movable plungers, electrodes carried by the said plungers and means for imparting to the ends of said plungers a lateral movement effected simultaneously with the vertical movement of the plungers, substantially as described and for the purposes set forth.

-4.-. In an arc-lamp, the combination of a magnet, a plurality of tubes or containers, plungers contained within the said tubes or containers and under the influence of the magnet, and a pin-and-slot connection between the plungers and the tubes or containers, and electrodes carried by the said plungers.

5. In an electric lamp, the combination of a magnet provided with aplurality of hollowended pole-pieces, tubes forming prolongations of the said pole-pieces, plungers working in the said tubes, each plunger having an end extending into proximity with the hollowended pole-pieces and electrodes carried by I00 the plungers together with means for effecting a lateral movement of the electrodes to strike the arc, substantially as described.

PETER H. F. SPIES. 

